Patents by Inventor Takeyuki Tachiiwa

Takeyuki Tachiiwa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10883690
    Abstract: In a vehicle lamp, an optical axis adjustment screw for pivoting an optical member around a pivotal axis extending in a vehicle width direction is supported by a lamp body in a state of extending in a vertical direction on the rear side of the vehicle lamp with respect to pivotal axis. A protruding piece extending toward the rear of the vehicle lamp is formed in the optical member, and a groove portion to be screwed with a threaded portion of the optical axis adjustment screw is formed in the rear end surface of the protruding piece. The groove portion of the protruding piece and the threaded portion of the optical axis adjustment screw can be maintained in the screwed state.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: January 5, 2021
    Assignee: KOITO MANUFACTURING CO., LTD.
    Inventors: Takeyuki Tachiiwa, Ryohei Takasu, Katsuhiko Okubo, Tatsuhiko Harada
  • Publication number: 20200080700
    Abstract: In a vehicle lamp, an optical axis adjustment screw for pivoting an optical member around a pivotal axis extending in a vehicle width direction is supported by a lamp body in a state of extending in a vertical direction on the rear side of the vehicle lamp with respect to pivotal axis. A protruding piece extending toward the rear of the vehicle lamp is formed in the optical member, and a groove portion to be screwed with a threaded portion of the optical axis adjustment screw is formed in the rear end surface of the protruding piece. The groove portion of the protruding piece and the threaded portion of the optical axis adjustment screw can be maintained in the screwed state.
    Type: Application
    Filed: March 7, 2018
    Publication date: March 12, 2020
    Applicant: KOITO MANUFACTURING CO., LTD.
    Inventors: Takeyuki Tachiiwa, Ryohei Takasu, Katsuhiko Okubo, Tatsuhiko Harada
  • Patent number: 10434928
    Abstract: An adjustment mechanism configured to adjust a reference position of an optical axis of a projection lens of a lens unit has a reference axis perpendicular to the optical axis and disposed in a plane which intersects with a focal point of the projection lens. The lens unit moves in an extension direction of the reference axis in accordance with rotation of a second screw. An acting point of a force to move the lens unit is disposed in a plane formed by the optical axis and the reference axis.
    Type: Grant
    Filed: April 10, 2018
    Date of Patent: October 8, 2019
    Assignee: KOITO MANUFACTURING CO., LTD.
    Inventors: Hiroki Shibata, Takeyuki Tachiiwa, Kazutami Oishi, Satoru Yashiki, Takashi Inoue
  • Patent number: 10099601
    Abstract: Provided is a vehicle lamp including an operation unit configured to operate an optical axis adjustment bevel gear provided in a lamp to be axially rotated. An axial rotation force transfer body of the operation unit includes an operation rod operated to be axially rotated, a driving rod engaged with the gear, and a wire interconnecting the operation rod and the driving rod in an axial rotation direction, and the driving rod is formed of a metal which is hard to rust. The driving rod is formed by a metal/injection/molding (MIM) technique. A support member extends between the driving rod and the lamp.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: October 16, 2018
    Assignee: Koito Manufacturing Co., Ltd.
    Inventor: Takeyuki Tachiiwa
  • Patent number: 10077795
    Abstract: A nut member 10 facilitates an adjustment of the optical axis of a light, has excellent handleability, and includes a flange portion 11 to be supported by an attachment portion 6 disposed on the back side of a vehicle lamp member 1, and a leg portion 15 protruding to the front from the flange portion 11 and to be elastically deformed and fastened to the attachment portion 6, the lamp member 1 having an optical axis 100 to be adjusted by handling a screw 8 inserted into an insertion hole 22 formed over from an inside of the flange portion 11 to the leg portion 15. Before an insertion of the screw 8, a screw thread 14 of a female screw portion 13 has been formed on an inner surface of a flange insertion pass (insertion hole 22) to extend one round in a circumferential direction.
    Type: Grant
    Filed: October 18, 2016
    Date of Patent: September 18, 2018
    Assignees: KOITO MANUFACTURING CO., LTD., NIFCO INC.
    Inventors: Takeyuki Tachiiwa, Yuji Shibata
  • Publication number: 20180229647
    Abstract: An adjustment mechanism configured to adjust a reference position of an optical axis of a projection lens of a lens unit has a reference axis perpendicular to the optical axis and disposed in a plane which intersects with a focal point of the projection lens. The lens unit moves in an extension direction of the reference axis in accordance with rotation of a second screw. An acting point of a force to move the lens unit is disposed in a plane formed by the optical axis and the reference axis.
    Type: Application
    Filed: April 10, 2018
    Publication date: August 16, 2018
    Applicant: KOITO MANUFACTURING CO., LTD.
    Inventors: Hiroki SHIBATA, Takeyuki TACHIIWA, Kazutami OISHI, Satoru YASHIKI, Takashi INOUE
  • Patent number: 9970624
    Abstract: An adjustment mechanism configured to adjust a reference position of an optical axis of a projection lens of a lens unit has a reference axis perpendicular to the optical axis and disposed in a plane which intersects with a focal point of the projection lens. The lens unit moves in an extension direction of the reference axis in accordance with rotation of a second screw. An acting point of a force to move the lens unit is disposed in a plane formed by the optical axis and the reference axis.
    Type: Grant
    Filed: August 22, 2014
    Date of Patent: May 15, 2018
    Assignee: KOITO MANUFACTURING CO., LTD.
    Inventors: Hiroki Shibata, Takeyuki Tachiiwa, Kazutami Oishi, Satoru Yashiki, Takashi Inoue
  • Publication number: 20170225607
    Abstract: Provided is a vehicle lamp including an operation unit configured to operate an optical axis adjustment bevel gear provided in a lamp to be axially rotated. An axial rotation force transfer body of the operation unit includes an operation rod operated to be axially rotated, a driving rod engaged with the gear, and a wire interconnecting the operation rod and the driving rod in an axial rotation direction, and the driving rod is formed of a metal which is hard to rust. The driving rod is formed by a metal/injection/molding (MIM) technique. A support member extends between the driving rod and the lamp.
    Type: Application
    Filed: January 26, 2017
    Publication date: August 10, 2017
    Inventor: Takeyuki Tachiiwa
  • Publication number: 20170108027
    Abstract: To provide a nut member that facilitates an adjustment of the optical axis of a light and that has excellent handleablity. A nut member 10 includes a flange portion 11 to be supported by an attachment portion 6 disposed on the back side of a vehicle lamp member 1, and a leg portion 15 protruding to the front from the flange portion 11 and to be elastically deformed and fastened to the attachment portion 6, the lamp member 1 having an optical axis 100 to be adjusted by handling a screw 8 inserted into an insertion hole 22 formed over from an inside of the flange portion 11 to the leg portion 15. Before an insertion of the screw 8, a screw thread 14 of a female screw portion 13 has been formed on an inner surface of a flange insertion pass (insertion hole 22) to extend one round in a circumferential direction.
    Type: Application
    Filed: October 18, 2016
    Publication date: April 20, 2017
    Applicants: KOITO MANUFACTURING CO., LTD., NIFCO INC.
    Inventors: Takeyuki TACHIIWA, Yuji SHIBATA
  • Publication number: 20160200027
    Abstract: Provided is a mold for a resin molded part which defines a cavity with a plurality of submolds. The plurality of submolds includes a gate submold including a gate formed therein to inject a molten resin into the cavity; a gas injection submold including a gas injection port formed therein to inject a gas into the cavity; and a core pin submold including a core pin provided to be movable in a retreat direction from the cavity. The core pin submold is arranged such that the core pin faces the gas injection port.
    Type: Application
    Filed: December 28, 2015
    Publication date: July 14, 2016
    Inventor: Takeyuki Tachiiwa
  • Publication number: 20160201869
    Abstract: An adjustment mechanism configured to adjust a reference position of an optical axis of a projection lens of a lens unit has a reference axis perpendicular to the optical axis and disposed in a plane which intersects with a focal point of the projection lens. The lens unit moves in an extension direction of the reference axis in accordance with rotation of a second screw. An acting point of a force to move the lens unit is disposed in a plane formed by the optical axis and the reference axis.
    Type: Application
    Filed: August 22, 2014
    Publication date: July 14, 2016
    Applicant: KOITO MANUFACTURING CO., LTD.
    Inventors: Hiroki SHIBATA, Takeyuki TACHIIWA, Kazutami OISHI, Satoru YASHIKI, Takashi INOUE
  • Patent number: 9157596
    Abstract: Disclosed is a vehicle lamp capable of improving a production efficiency, reducing a cost, and shortening a production line as compared to a case in which a dedicated mechanical equipment is used. The vehicle lamp includes an optical unit, a pivot member fixed to a bracket of the optical unit, a lamp body having a bearing insertion hole, and a bearing member which is fixed to the lamp body to be engageable with the pivot member. The pivot member and the bearing member are engaged with each other to constitute at least one supporting unit of an aiming mechanism. In addition, the optical unit is tiltably supported by the aiming mechanism and the bearing member is fixed to the lamp body by being inserted into the bearing insertion hole.
    Type: Grant
    Filed: December 3, 2013
    Date of Patent: October 13, 2015
    Assignee: KOITO MANUFACTURING CO. LTD.
    Inventors: Takeyuki Tachiiwa, Manabu Maeda, Kazutami Oishi, Yuki Takahashi
  • Publication number: 20150176629
    Abstract: A nut member, which is used for an aiming mechanism of a lamp configured by an aiming screw 120 that is supported in a lamp body 101 so as to turn on its own axis and a nut member 1 that is supported in a bracket 109 of a reflector, includes a fitting portion 3 which is to be fitted in a fitting hole 110 provided in the bracket 109, and an internal thread portion 2 which is to be screwed on to an external thread portion 121 of the aiming screw 120, and an introducing portion 4 which guides the aiming screw 120, wherein the fitting portion 3 and the internal thread portion 2 are formed in different axial positions on the nut member 1.
    Type: Application
    Filed: July 16, 2013
    Publication date: June 25, 2015
    Applicant: KOITO MANUFACTURING CO., LTD.
    Inventor: Takeyuki Tachiiwa
  • Patent number: 8944652
    Abstract: An optical axis adjusting screw (15) is provided with a shaft portion (16), a gear portion (17), and an elastic engagement portion (18). The elastic engagement portion (18) is provided with a base end (18BE) and a free end (18FE). The base end (18BE) is fixed to the shaft portion (16). A distal end face (18a) is formed at the free end (18FE) and is substantially perpendicular to an axial direction of the shaft portion (16). There is no parting line on the distal end face (18a).
    Type: Grant
    Filed: February 7, 2011
    Date of Patent: February 3, 2015
    Assignee: Koito Manufacturing Co., Ltd.
    Inventor: Takeyuki Tachiiwa
  • Publication number: 20140169009
    Abstract: Disclosed is a vehicle lamp capable of improving a production efficiency, reducing a cost, and shortening a production line as compared to a case in which a dedicated mechanical equipment is used. The vehicle lamp includes an optical unit, a pivot member fixed to a bracket of the optical unit, a lamp body having a bearing insertion hole, and a bearing member which is fixed to the lamp body to be engageable with the pivot member. The pivot member and the bearing member are engaged with each other to constitute at least one supporting unit of an aiming mechanism. In addition, the optical unit is tiltably supported by the aiming mechanism and the bearing member is fixed to the lamp body by being inserted into the bearing insertion hole.
    Type: Application
    Filed: December 3, 2013
    Publication date: June 19, 2014
    Applicant: KOITO MANUFACTURING CO., LTD.
    Inventors: Takeyuki TACHIIWA, Manabu MAEDA, Kazutami OISHI, Yuki TAKAHASHI
  • Publication number: 20110192243
    Abstract: An optical axis adjusting screw (15) is provided with a shaft portion (16), a gear portion (17), and an elastic engagement portion (18). The elastic engagement portion (18) is provided with a base end (18BE) and a free end (18FE). The base end (18BE) is fixed to the shaft portion (16). A distal end face (18a) is formed at the free end (18FE) and is substantially perpendicular to an axial direction of the shaft portion (16). There is no parting line on the distal end face (18a).
    Type: Application
    Filed: February 7, 2011
    Publication date: August 11, 2011
    Applicant: KOITO MANUFACTURING CO., LTD.
    Inventor: Takeyuki Tachiiwa
  • Patent number: 7452154
    Abstract: A universal joint component is used for connecting two members, such as a reflector and a lamp body. The universal joint component includes a shaft, an installation section formed on one end of the shaft, and a spherical head formed on the other end of the shaft. The spherical head includes a joint base, a top end, and at least one gap formed on a side of the spherical head between the top end and the joining base. The gap is formed of a groove or through hole so as to straddle a phantom line substantially passing through a center of the spherical head and perpendicularly intersecting a shaft axis of the shaft. Split head sections are defined by the at least one gap so that the split head sections flexibly deform when the spherical head is inserted into a spherical socket.
    Type: Grant
    Filed: February 22, 2005
    Date of Patent: November 18, 2008
    Assignees: NIFCO Inc., Koito Manufacturing Co., Ltd.
    Inventors: Tomoaki Aoshima, Nobuhiro Hara, Takeyuki Tachiiwa
  • Patent number: 7207704
    Abstract: A vehicular lamp having a distance adjustment section that adjusts the distance between the lamp body and the reflector and includes an adjustment shaft, a gear member, and a receiving element. The adjustment shaft has a spherical end; the gear member includes a shaft portion that has the adjustment shaft therein, elastic pawls protruding from the shaft portion, and empty spaces defined by the elastic pawls to allow flexure of the elastic pawls toward the shaft portion; and the receiving element is formed on the back surface of the reflector. The gear member having the adjustment shaft is rotatably inserted in an insertion hole of the lamp body, the elastic pawls are engaged with the edge of the insertion hole to prevent the gear member from slipping out; and the spherical end of the adjustment shaft is engaged with the receiving element and prevented from rotating.
    Type: Grant
    Filed: November 2, 2005
    Date of Patent: April 24, 2007
    Assignee: Koito Manufacturing Co., Ltd.
    Inventors: Takeyuki Tachiiwa, Manbu Maeda, Koichi Nakamura, Fujio Onuki
  • Publication number: 20060092653
    Abstract: A vehicular lamp having a distance adjustment section that adjusts the distance between the lamp body and the reflector and includes an adjustment shaft, a gear member, and a receiving element. The adjustment shaft has a spherical end; the gear member includes a shaft portion that has the adjustment shaft therein, elastic pawls protruding from the shaft portion, and empty spaces defined by the elastic pawls to allow flexure of the elastic pawls toward the shaft portion; and the receiving element is formed on the back surface of the reflector. The gear member having the adjustment shaft is rotatably inserted in an insertion hole of the lamp body, the elastic pawls are engaged with the edge of the insertion hole to prevent the gear member from slipping out; and the spherical end of the adjustment shaft is engaged with the receiving element and prevented from rotating.
    Type: Application
    Filed: November 2, 2005
    Publication date: May 4, 2006
    Inventors: Takeyuki Tachiiwa, Manabu Maeda, Koichi Nakamura, Fujio Onuki
  • Publication number: 20050191119
    Abstract: A universal joint component is used for connecting two members, such as a reflector and a lamp body. The universal joint component includes a shaft, an installation section formed on one end of the shaft, and a spherical head formed on the other end of the shaft. The spherical head includes a joint base, a top end, and at least one gap formed on a side of the spherical head between the top end and the joining base. The gap is formed of a groove or through hole so as to straddle a phantom line substantially passing through a center of the spherical head and perpendicularly intersecting a shaft axis of the shaft. Split head sections are defined by the at least one gap so that the split head sections flexibly deform when the spherical head is inserted into a spherical socket.
    Type: Application
    Filed: February 22, 2005
    Publication date: September 1, 2005
    Applicants: NIFCO INC., KOITO MANUFACTURING CO., LTD.
    Inventors: Tomoaki Aoshima, Nobuhiro Hara, Takeyuki Tachiiwa